<template>
  <div class="about">
    <h1>{{ id ? "编辑" : "新建" }}物品</h1>
    <!-- @submit.native.prevent 除止原生表单默认提交（不要跳转页面） -->
    <el-form label-width="120px" @submit.native.prevent="save">
      <el-form-item label="名称">
        <el-input v-model="model.name"></el-input>
      </el-form-item>
      <el-form-item label="图标">
        <el-upload
          class="avatar-uploader"
          :action="$http.defaults.baseURL + '/upload'"
          :show-file-list="false"
          :on-success="afterUpload"
        >
          <img v-if="model.icon" :src="model.icon" class="avatar" />
          <i v-else class="el-icon-plus avatar-uploader-icon"></i>
        </el-upload>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" native-type="submit">保存</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
export default {
  // 接收参数
  props: {
    id: {}
  },
  data() {
    return {
      model: {}
    };
  },
  methods: {
    afterUpload(res){
      this.$set(this.model,'icon',res.url)
      // this.model.icon = res.url
    },
    // async 用 await 异步换同步的类似写法
    async save() {
      // 发起请求
      // eslint-disable-next-line no-unused-vars
      let res;
      if (this.id) {
        res = await this.$http.put(`rest/items/${this.id}`, this.model);
      } else {
        res = await this.$http.post("rest/items", this.model);
      }
      // 跳转到列表页面
      this.$router.push("/items/list");
      this.$message({
        type: "success",
        message: "保存成功"
      });
    },

    // 拿到编辑的数据
    async fetch() {
      const res = await this.$http.get(`rest/items/${this.id}`);
      this.model = res.data;
    }
  },

  created() {
    this.id && this.fetch();
  }
};
</script>

<style scoped>
.avatar-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.avatar-uploader .el-upload:hover {
  border-color: #409eff;
}
.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 178px;
  height: 178px;
  line-height: 178px;
  text-align: center;
}
.avatar {
  width: 178px;
  height: 178px;
  display: block;
}
</style>